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How to rename a VM, instance or server in OpenStack? After you create an instance in OpenStack, you can modify its name in the running state. True if the service running in the VM was changed and the name needs to be updated to reflect the name. The instance / VM name in OpenStack can… read more »
This is Part 5 of our Openstack Lab guide series. So far we have introduced: Openstack Liberty Lab Part 1: Setting Up the Network and All Prerequisites Openstack Liberty Lab Part 2: Install Openstack Packages Openstack Liberty Lab Part 3: Configuring Keystone Identity Services Openstack Liberty Lab Part 4: Configuring Glance Image Service For nova… read more »
How to change instance / VM hostname in AWS / OpenStack / DigitalOcean Cloud platform. When creating an instance in the AWS or OpenStack cloud, the host name is generated based on the name provided and the virtualized environment in which it runs. For AWS, a private IP address is usually used as part of… read more »
The most important and commonly used functions in the virtualization world are functions such as cloning a virtual machine, taking a snapshot of the current state of the virtual machine, and migrating the virtual machine in real time. Recently I have been using KVM and Openstack Cloud computing platforms. Sometimes you have to clone a… read more »
In today’s guide we will look at how to create and configure a bridge network for KVM in Linux-RHEL / CentOS / Ubuntu / Debian / Arch Linuxe.t.c. When using Linux bridges in KVM, virtual machines can access external networks and services outside the virtual environment. There are multiple ways to configure bridged networks for… read more »
Configure Neutron on the controller node Neutron is an OpenStack project designed to provide “network connection as a service” between interface devices (such as vNICs) managed by other OpenStack services (such as nova). It implements the Neutron API. Here are the reasons why we use Neutron: It provides an API for cloud tenants to build… read more »
Configure Neutron on the compute nodes Neutron usually requires plug-in software, such as OpenVswitch. So far, on the Compute node, we have installed Libvirt and Nova Compute. We will add Openvswitch and L2 Agent. “Make sure there are no believers and unbelievers in the religion of love. Love embraces everyone.” ―Rumi step 1: Installing Neutron… read more »
Create and launch Horizon’s virtual machine instance ad install step 1: Sign in with the new user we created earlier in the system and continue to create the instance [[email protected] ~(keystone)]# su – tech ##use your username [[email protected] ~]$ [[email protected] ~]$ vim ~/keystonerc export OS_PROJECT_DOMAIN_NAME=default export OS_USER_DOMAIN_NAME=default export OS_PROJECT_NAME=helloworld #remember the project we had created… read more »
This guide will show you how to expand or resize the ext2 / 3/4 and XFS file systems at runtime without using LVM. This may be the root partition with an ext2 / 3/4 or XFS file system but no LVM configured. In previous tutorials, we looked at how to extend the root file system… read more »
How to use Packstack to deploy a private OpenStack Cloud on CentOS? OpenStack is a popular free and open source software platform for building public and private clouds. You can use the Packstack installation utility to run an all-in-one OpenStack cloud on CentOS 7 in minutes. After deployment, you have the option to add more… read more »